“The cosmos was originally all hydrogen and helium. Heavier elements were made in red giants and supernovas and then blown off to space, where they were available to subsequent generations of stars and planets. Our sun is probably a third generation star. Except for hydrogen and helium, every atom in the Earth was synthesized in other stars. The silicon in the rocks, the oxygen in the air, the carbon in our DNA, gold in our banks, the uranium in our arsenals were all made thousands of light years away, and billions of years ago. Our planet, our society, and we ourselves are built of star stuff.”

—

Carl Sagan

I loved watching Cosmos' when I was young.I've probably seen every one of its 13 episodes at least three times.Good times.

FROM: WikipediaThe(Cosmos) series was first broadcast by the Public Broadcasting Service in 1980 and was the most widely watched series in the history of American public television until The Civil War (1990). As of 2009, it was still the most widely watched PBS series in the world.[1] It won an Emmy and a Peabody Award and has since been broadcast in more than 60 countries and seen by over 500 million people.[2][3] A book was also published to accompany the series.